APPARATUS FOR MEASURING THERMAL DIMENSIONAL CHANGE OF CERAMICS OR THE LIKE
A laser beam-transmitting section of a laser measuring instrument of dimensional change is arranged at one side of a specimen heating furnace, a laser beamreceiving section is arranged at the opposide side of the furnace, a slit fixture for shielding within-the-furnace radiation heat and light is pr...
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| creator | MIMURA, TOSHISADA FUJIWARA, TEIICHI HISANARI, TOSHIAKI |
| description | A laser beam-transmitting section of a laser measuring instrument of dimensional change is arranged at one side of a specimen heating furnace, a laser beamreceiving section is arranged at the opposide side of the furnace, a slit fixture for shielding within-the-furnace radiation heat and light is provided inside a measuring window, a heat insulating material having a slit for shielding within-the-furnace radiation heat and light is provided inside said slit fixture, and a within-the-furnace radiation light shielding slit plate and a within-the-furnace radiation light reducing optical filter are disposed at the end faces of said respective laser beamtransmitting section and said laser beam-receiving section whereby measuring errors caused by the light and heat generated within the furnace are prevented (the interior of a specimen heating furance core pipe can be replaced by various kinds of atmospheres as necessary, and it is possible to measure the dimensional change of small-size specimens of ceramics or the like). According to the present apparatus for measuring thermal dimensional change of ceramics or the like, measurement is possible with a resolution of not greater than 0.5 .mu.m. |
| format | Patent |
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According to the present apparatus for measuring thermal dimensional change of ceramics or the like, measurement is possible with a resolution of not greater than 0.5 .mu.m.</description><edition>5</edition><language>eng ; fre</language><subject>ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS ; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES ; MEASURING ; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE ; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR ; PHYSICS ; TARIFF METERING APPARATUS ; TESTING</subject><creationdate>1991</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19910222&DB=EPODOC&CC=CA&NR=2064773A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19910222&DB=EPODOC&CC=CA&NR=2064773A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MIMURA, TOSHISADA</creatorcontrib><creatorcontrib>FUJIWARA, TEIICHI</creatorcontrib><creatorcontrib>HISANARI, TOSHIAKI</creatorcontrib><title>APPARATUS FOR MEASURING THERMAL DIMENSIONAL CHANGE OF CERAMICS OR THE LIKE</title><description>A laser beam-transmitting section of a laser measuring instrument of dimensional change is arranged at one side of a specimen heating furnace, a laser beamreceiving section is arranged at the opposide side of the furnace, a slit fixture for shielding within-the-furnace radiation heat and light is provided inside a measuring window, a heat insulating material having a slit for shielding within-the-furnace radiation heat and light is provided inside said slit fixture, and a within-the-furnace radiation light shielding slit plate and a within-the-furnace radiation light reducing optical filter are disposed at the end faces of said respective laser beamtransmitting section and said laser beam-receiving section whereby measuring errors caused by the light and heat generated within the furnace are prevented (the interior of a specimen heating furance core pipe can be replaced by various kinds of atmospheres as necessary, and it is possible to measure the dimensional change of small-size specimens of ceramics or the like). 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According to the present apparatus for measuring thermal dimensional change of ceramics or the like, measurement is possible with a resolution of not greater than 0.5 .mu.m.</abstract><edition>5</edition><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre |
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| subjects | ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING |
| title | APPARATUS FOR MEASURING THERMAL DIMENSIONAL CHANGE OF CERAMICS OR THE LIKE |
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